#ifndef LOG_H
#define LOG_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdarg.h>
#include <stdio.h>
#include <time.h>

#define LOG_VERSION "0.1.0"

typedef struct {
	va_list     ap;
	const char *fmt;
	const char *file;
	struct tm  *time;
	void       *udata;
	int         line;
	int         level;
} log_Event;

typedef void (*log_LogFn)(log_Event *ev);
typedef void (*log_LockFn)(char lock, void *udata);
enum { LOG_DEBUG, LOG_INFO, LOG_WARN, LOG_ERROR, LOG_FATAL };

#define log_debug(...) log_log(LOG_DEBUG, __FILE__, __LINE__, __VA_ARGS__)
#define log_info(...) log_log(LOG_INFO, __FILE__, __LINE__, __VA_ARGS__)
#define log_warn(...) log_log(LOG_WARN, __FILE__, __LINE__, __VA_ARGS__)
#define log_error(...) log_log(LOG_ERROR, __FILE__, __LINE__, __VA_ARGS__)
#define log_fatal(...) log_log(LOG_FATAL, __FILE__, __LINE__, __VA_ARGS__)

const char *log_level_string(int level);
void        log_set_lock(log_LockFn fn, void *udata);
void        log_set_level(int level);
void        log_set_quiet(char enable);
int         log_add_callback(log_LogFn fn, void *udata, int level);
int         log_add_fp(FILE *fp, int level);
void        log_log(int level, const char *file, int line, const char *fmt, ...);
#ifdef __cplusplus
}
#endif
#endif
